Lilian's favorite magazine published 505050 issues last year, and each issue contained approximately 250250250 pages. She wants to take a cluster random sample of about 1{,}0001,0001, comma, 000 total pages to estimate what proportion of all pages contained an advertisement.

a. Randomly select 4 issues, and examine every page in those issues

Step-by-step explanation:

Based on the information given the since each of the issue contained 250 pages in which

She as well wants to take a RANDOM SAMPLE of 1,000 total pages which means that the best strategies that will accomplish HER INTENDED DESIGN is for her to RANDOMLY SELECT 4 ISSUES and thereby examine every of the page in those issues. The RANDOM SAMPLE numbers of issue to select is calculated using this formula

Random sample=Total pages /Number of pages

Let plug in the formula

Random sample=1,000/250

Random sample=4 issues

Therefore the strategies that will accomplish HER INTENDED DESIGN is for her to RANDOMLY SELECT 4 ISSUES, AND EXAMINE EVERY PAGE IN THOSE ISSUES.

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step-by-step explanation:

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c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.